Engineering Bulletin #2002187
Upgrade to Hartley Stop Block Cylinder

The stop block retrofit kit was designed to address customer reports of excessive stop block cylinder repairs due to premature failure of the cylinder rod and cylinder wall ruptures.

The direct drive conversion kit was designed to simplify installation, significantly increase useful life of the gearbox and greatly reduce the drive maintenance by eliminating belts and sheaves.  This bulletin pertains to Model 100B-200 B&P Speedmullors.

The direct drive conversion kit was designed to simplify installation, significantly increase useful life of the gearbox and greatly reduce the drive maintenance by eliminating belts and sheaves.  This bulletin pertains to Model 100B-250 B&P Speedmullors.

Series LM 81 TK 10-D and LM 91 TK 11-D Moisture Controllers have been superceded by the new series MICOMP UNI Type G-91. Some repair parts are no longer available; other will become unavailable over time.  This new system measures and corrects continuously the moisture within a defined range of temperatures (32-212°F/ 0-100°C) and is capable of producing discharge sand moisture within a very close tolerance of ± 0.2% H2O. By extending the former range of controllable temperatures (68- 140°F/ 20 - 60°C) to 32-212°F/ 0 - 100°C, even cold dry return sand (<68°F/ 20°C) leaves the cooler at the desired moisture content.

Until now, troubleshooting or modifying PLC programs by Simpson control engineers or service engineers required a visit to the customer location.  This could be expensive and required waiting for the service engineer to arrive.  The Modem upgrade package allows customers using Simpson products to have Simpson engineers help troubleshoot problems with the equipment or modify the PLC program over the telephone lines at less cost than having a site visit. With the MODEM kit, Simpson personnel from the corporate office could view and modify the PLC program that is operating the machine during operation.

Engineering Bulletin #2005001
Upgrade to 3818-NT Compactability Controller/Conductivity Measurement

Currently, the flush water addition on the Model 3818-NT Simpson Compactability Controller is a fixed amount that is entered by an operator and can only be changed manually.  Sand systems with return sands that have large variances in moisture may result in the flush water setting being too large or too small.  Simpson Technologies has developed a means to automatically adjust the flush water amount based on a conductivity reading at the feed belt to the muller weigh hopper.

Until now the only way to capture machine performance data on Hartley compactability controllers was with a printer. Although this method is effective it has its drawbacks such as large stacks of paper, no way to easily retrieve past data, and the difficulty of keeping the printer operating in the foundry environment.  The Simpson Group communication and data acquisition package will allow for viewing and archiving operational and performance parameters of Hartley Compactability Controllers that are controlled by an Allen Bradley PLC.

The improved agitator mounting bracket was designed to address customer reports of premature bracket failure in the field.  The old bracket design also allowed for an unwanted buildup of molding sand. 

Beardsley and Piper has developed a new controls package for the older Matchblomatic molding machines machines that are still using mechanical stepper switches to control their functions.